推力矢量发动机燃气舵系统设计与分析

Design and Analysis on Jet Vane System of Thrust-Vector Motor

对推力矢量发动机燃气舵进行总体设计,构建燃气舵控制系统的仿真模型,为实用的推力矢量控制装置提供了有价值的参考。首先在大量试验的基础上,对推力矢量燃气舵进行初步设计。通过对燃气舵系统的受力分析,找出弹体和燃气舵之间的相互作用关系。推出了弹体和燃气舵片之间力的转换关系、燃气舵片偏角和舵机转角之间的转换关系,进而推导出燃气舵系统的铰链力矩。其次,对燃气舵系统进行力矩分析和力学转换,确定舵机系统受到的负载。结果表明,所设计的燃气舵曲柄滑杆传动机构能够有效减小铰链力矩对舵机系统的负载。最后,构建燃气舵系统数学模型,利用MATLAB对其进行仿真并取得了较好的效果。最终实现燃气舵系统的PID精确控制,为燃气舵系统的设计和控制研究提供了依据。

Overall design of the jet vane of thrust-vector motor was reported.Simulation model of jet vane control system was establislied,which provides a valuable reference for the practical thrust-vector control device.Firstly,thrust-vector jet vane was designed preliminarily on the basis of a large number of experiments.According to the force analysis on the jet vane system,interaction relation and conversion relation between project and jet vane were deduced.Conversion relation between drift angle of jet vane and rotation angle of actuator were also derived.And then,hinge torque of jet vane system was derived eventually.Sencondly,torque analysis and mechanical conversion were made to determine the load applied to the actuator system.Results show that crank slip bar transmission mechanism of the jet vane is able to effectively reduce the hinge torque load on the actuator system.Finally,simulation model of jet vane systemwas established.MATLAB was used to simulate the model the favorable effects were obtained.PID precise control to jet vane system was realized eventually,which providesthe basis for design and control research on jet vane system.